On Sat, 21 Apr 2007 22:01:47 +0100 Alan Cox <[EMAIL PROTECTED]> wrote:

> > > +#define lower_32_bits(n) (sizeof(n) == 8 ? (u32)(n) : (n))
> > 
> > n&0xffffffff would be simpler.
> > 
> > Do we actually have any call for this?
> 
> The only case for all of this we care about is sector_t, which is one
> type, with specific properties (eg always being positive). The rest is
> over-engineering. Call it sector_upper32() do it the simple way and stop
> trying to solve a problem we don't have

James said we have the same problem with dma_addr_t.
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